<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta
      http-equiv="Content-Security-Policy"
      content="default-src 'self'; style-src 'self' 'unsafe-inline'; img-src 'self' data"
    />
    <title>Document</title>
  </head>
  <body>
    <h1>Hello, world</h1>
    <button id="clickme">点我</button>
    <br />
    <input id="content" />
    <button id="writeBtn">文件写入数据</button>
    <br />
    <button id="readBtn">读取文件</button>
    <script src="./render.js" type="text/javascript"></script>
  </body>
</html>
